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Finding the Fourth Proportional to 72,970.59, 109,455.89 and 56,354.86

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Solution

The fourth proportional to 72,970.59, 109,455.89 and 56,354.86 is: 84,532.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,970.59 : 109,455.89 = 56,354.86 : x
  2. Step 2: Convert to fraction form
    72,970.59/109,455.89 = 56,354.86/x
  3. Step 3: Cross multiply
    72,970.59x = 109,455.89 × 56,354.86
  4. Step 4: Simplify right side
    72,970.59x = 6,168,371,357.13
  5. Step 5: Solve for x
    x = 6,168,371,357.13/72,970.59
  6. Step 6: Final answer
    x = 84,532.29

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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.