Home / 90,869.94-125,398.65-56,897.18

Finding the Fourth Proportional to 90,869.94, 125,398.65 and 56,897.18

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Solution

The fourth proportional to 90,869.94, 125,398.65 and 56,897.18 is: 78,516.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,869.94 : 125,398.65 = 56,897.18 : x
  2. Step 2: Convert to fraction form
    90,869.94/125,398.65 = 56,897.18/x
  3. Step 3: Cross multiply
    90,869.94x = 125,398.65 × 56,897.18
  4. Step 4: Simplify right side
    90,869.94x = 7,134,829,560.81
  5. Step 5: Solve for x
    x = 7,134,829,560.81/90,869.94
  6. Step 6: Final answer
    x = 78,516.94

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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.