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Finding the Fourth Proportional to 91,792.10, 137,688.15 and 52,353.20

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Solution

The fourth proportional to 91,792.10, 137,688.15 and 52,353.20 is: 78,529.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,792.10 : 137,688.15 = 52,353.20 : x
  2. Step 2: Convert to fraction form
    91,792.10/137,688.15 = 52,353.20/x
  3. Step 3: Cross multiply
    91,792.10x = 137,688.15 × 52,353.20
  4. Step 4: Simplify right side
    91,792.10x = 7,208,415,254.58
  5. Step 5: Solve for x
    x = 7,208,415,254.58/91,792.10
  6. Step 6: Final answer
    x = 78,529.80

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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.