Home / 78,319,303.76-108,074,302.80-45,281,672.66

Finding the Fourth Proportional to 78,319,303.76, 108,074,302.80 and 45,281,672.66

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Solution

The fourth proportional to 78,319,303.76, 108,074,302.80 and 45,281,672.66 is: 62,485,044.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,319,303.76 : 108,074,302.80 = 45,281,672.66 : x
  2. Step 2: Convert to fraction form
    78,319,303.76/108,074,302.80 = 45,281,672.66/x
  3. Step 3: Cross multiply
    78,319,303.76x = 108,074,302.80 × 45,281,672.66
  4. Step 4: Simplify right side
    78,319,303.76x = 4,893,785,202,347,321
  5. Step 5: Solve for x
    x = 4,893,785,202,347,321/78,319,303.76
  6. Step 6: Final answer
    x = 62,485,044.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.