Home / 90,500.31-124,894.64-56,528.91

Finding the Fourth Proportional to 90,500.31, 124,894.64 and 56,528.91

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Solution

The fourth proportional to 90,500.31, 124,894.64 and 56,528.91 is: 78,012.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,500.31 : 124,894.64 = 56,528.91 : x
  2. Step 2: Convert to fraction form
    90,500.31/124,894.64 = 56,528.91/x
  3. Step 3: Cross multiply
    90,500.31x = 124,894.64 × 56,528.91
  4. Step 4: Simplify right side
    90,500.31x = 7,060,157,581.40
  5. Step 5: Solve for x
    x = 7,060,157,581.40/90,500.31
  6. Step 6: Final answer
    x = 78,012.52

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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.