Home / 78,501.28-117,750.90-19,337.47

Finding the Fourth Proportional to 78,501.28, 117,750.90 and 19,337.47

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Solution

The fourth proportional to 78,501.28, 117,750.90 and 19,337.47 is: 29,005.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,501.28 : 117,750.90 = 19,337.47 : x
  2. Step 2: Convert to fraction form
    78,501.28/117,750.90 = 19,337.47/x
  3. Step 3: Cross multiply
    78,501.28x = 117,750.90 × 19,337.47
  4. Step 4: Simplify right side
    78,501.28x = 2,277,004,496.22
  5. Step 5: Solve for x
    x = 2,277,004,496.22/78,501.28
  6. Step 6: Final answer
    x = 29,005.95

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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.