Home / 78,888,175.10-118,276,275.45-30,347,272.70

Finding the Fourth Proportional to 78,888,175.10, 118,276,275.45 and 30,347,272.70

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Solution

The fourth proportional to 78,888,175.10, 118,276,275.45 and 30,347,272.70 is: 45,499,371.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,888,175.10 : 118,276,275.45 = 30,347,272.70 : x
  2. Step 2: Convert to fraction form
    78,888,175.10/118,276,275.45 = 30,347,272.70/x
  3. Step 3: Cross multiply
    78,888,175.10x = 118,276,275.45 × 30,347,272.70
  4. Step 4: Simplify right side
    78,888,175.10x = 3,589,362,385,021,465
  5. Step 5: Solve for x
    x = 3,589,362,385,021,465/78,888,175.10
  6. Step 6: Final answer
    x = 45,499,371.49

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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.