Home / 78,478.14-117,700.61-25,875.12

Finding the Fourth Proportional to 78,478.14, 117,700.61 and 25,875.12

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Solution

The fourth proportional to 78,478.14, 117,700.61 and 25,875.12 is: 38,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,478.14 : 117,700.61 = 25,875.12 : x
  2. Step 2: Convert to fraction form
    78,478.14/117,700.61 = 25,875.12/x
  3. Step 3: Cross multiply
    78,478.14x = 117,700.61 × 25,875.12
  4. Step 4: Simplify right side
    78,478.14x = 3,045,517,278.45
  5. Step 5: Solve for x
    x = 3,045,517,278.45/78,478.14
  6. Step 6: Final answer
    x = 38,807.21

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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.