Home / 83,505.15-115,232.76-47,688.12

Finding the Fourth Proportional to 83,505.15, 115,232.76 and 47,688.12

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Solution

The fourth proportional to 83,505.15, 115,232.76 and 47,688.12 is: 65,807.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,505.15 : 115,232.76 = 47,688.12 : x
  2. Step 2: Convert to fraction form
    83,505.15/115,232.76 = 47,688.12/x
  3. Step 3: Cross multiply
    83,505.15x = 115,232.76 × 47,688.12
  4. Step 4: Simplify right side
    83,505.15x = 5,495,233,686.81
  5. Step 5: Solve for x
    x = 5,495,233,686.81/83,505.15
  6. Step 6: Final answer
    x = 65,807.12

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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.