Home / 90,487,104.32-124,885,012.20-51,338,579.60

Finding the Fourth Proportional to 90,487,104.32, 124,885,012.20 and 51,338,579.60

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Solution

The fourth proportional to 90,487,104.32, 124,885,012.20 and 51,338,579.60 is: 70,854,506.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,487,104.32 : 124,885,012.20 = 51,338,579.60 : x
  2. Step 2: Convert to fraction form
    90,487,104.32/124,885,012.20 = 51,338,579.60/x
  3. Step 3: Cross multiply
    90,487,104.32x = 124,885,012.20 × 51,338,579.60
  4. Step 4: Simplify right side
    90,487,104.32x = 6,411,419,139,676,671
  5. Step 5: Solve for x
    x = 6,411,419,139,676,671/90,487,104.32
  6. Step 6: Final answer
    x = 70,854,506.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.