Home / 90,310.71-124,689.05-56,332.83

Finding the Fourth Proportional to 90,310.71, 124,689.05 and 56,332.83

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Solution

The fourth proportional to 90,310.71, 124,689.05 and 56,332.83 is: 77,776.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,310.71 : 124,689.05 = 56,332.83 : x
  2. Step 2: Convert to fraction form
    90,310.71/124,689.05 = 56,332.83/x
  3. Step 3: Cross multiply
    90,310.71x = 124,689.05 × 56,332.83
  4. Step 4: Simplify right side
    90,310.71x = 7,024,087,056.51
  5. Step 5: Solve for x
    x = 7,024,087,056.51/90,310.71
  6. Step 6: Final answer
    x = 77,776.90

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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.