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Finding the Fourth Proportional to 72,948.58, 109,422.88 and 56,332.85

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Solution

The fourth proportional to 72,948.58, 109,422.88 and 56,332.85 is: 84,499.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,948.58 : 109,422.88 = 56,332.85 : x
  2. Step 2: Convert to fraction form
    72,948.58/109,422.88 = 56,332.85/x
  3. Step 3: Cross multiply
    72,948.58x = 109,422.88 × 56,332.85
  4. Step 4: Simplify right side
    72,948.58x = 6,164,101,856.83
  5. Step 5: Solve for x
    x = 6,164,101,856.83/72,948.58
  6. Step 6: Final answer
    x = 84,499.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.