Home / 78,444.38-117,666.90-19,280.06

Finding the Fourth Proportional to 78,444.38, 117,666.90 and 19,280.06

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Solution

The fourth proportional to 78,444.38, 117,666.90 and 19,280.06 is: 28,920.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,444.38 : 117,666.90 = 19,280.06 : x
  2. Step 2: Convert to fraction form
    78,444.38/117,666.90 = 19,280.06/x
  3. Step 3: Cross multiply
    78,444.38x = 117,666.90 × 19,280.06
  4. Step 4: Simplify right side
    78,444.38x = 2,268,624,892.01
  5. Step 5: Solve for x
    x = 2,268,624,892.01/78,444.38
  6. Step 6: Final answer
    x = 28,920.17

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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.