Home / 78,904.64-118,384.56-49,287.76

Finding the Fourth Proportional to 78,904.64, 118,384.56 and 49,287.76

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Solution

The fourth proportional to 78,904.64, 118,384.56 and 49,287.76 is: 73,948.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,904.64 : 118,384.56 = 49,287.76 : x
  2. Step 2: Convert to fraction form
    78,904.64/118,384.56 = 49,287.76/x
  3. Step 3: Cross multiply
    78,904.64x = 118,384.56 × 49,287.76
  4. Step 4: Simplify right side
    78,904.64x = 5,834,909,780.99
  5. Step 5: Solve for x
    x = 5,834,909,780.99/78,904.64
  6. Step 6: Final answer
    x = 73,948.88

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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.