Home / 78,117.30-117,182.02-25,532.10

Finding the Fourth Proportional to 78,117.30, 117,182.02 and 25,532.10

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Solution

The fourth proportional to 78,117.30, 117,182.02 and 25,532.10 is: 38,300.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,117.30 : 117,182.02 = 25,532.10 : x
  2. Step 2: Convert to fraction form
    78,117.30/117,182.02 = 25,532.10/x
  3. Step 3: Cross multiply
    78,117.30x = 117,182.02 × 25,532.10
  4. Step 4: Simplify right side
    78,117.30x = 2,991,903,084.76
  5. Step 5: Solve for x
    x = 2,991,903,084.76/78,117.30
  6. Step 6: Final answer
    x = 38,300.13

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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.