Home / 90,220.10-124,490-51,458.25

Finding the Fourth Proportional to 90,220.10, 124,490 and 51,458.25

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Solution

The fourth proportional to 90,220.10, 124,490 and 51,458.25 is: 71,004.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,220.10 : 124,490 = 51,458.25 : x
  2. Step 2: Convert to fraction form
    90,220.10/124,490 = 51,458.25/x
  3. Step 3: Cross multiply
    90,220.10x = 124,490 × 51,458.25
  4. Step 4: Simplify right side
    90,220.10x = 6,406,037,542.50
  5. Step 5: Solve for x
    x = 6,406,037,542.50/90,220.10
  6. Step 6: Final answer
    x = 71,004.55

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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.