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Finding the Fourth Proportional to 72,774.74, 100,423.77 and 40,937.51

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Solution

The fourth proportional to 72,774.74, 100,423.77 and 40,937.51 is: 56,490.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,774.74 : 100,423.77 = 40,937.51 : x
  2. Step 2: Convert to fraction form
    72,774.74/100,423.77 = 40,937.51/x
  3. Step 3: Cross multiply
    72,774.74x = 100,423.77 × 40,937.51
  4. Step 4: Simplify right side
    72,774.74x = 4,111,099,088.61
  5. Step 5: Solve for x
    x = 4,111,099,088.61/72,774.74
  6. Step 6: Final answer
    x = 56,490.74

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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.