Home / 78,079,862.12-107,725,587.65-45,035,680.86

Finding the Fourth Proportional to 78,079,862.12, 107,725,587.65 and 45,035,680.86

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Solution

The fourth proportional to 78,079,862.12, 107,725,587.65 and 45,035,680.86 is: 62,135,037.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,079,862.12 : 107,725,587.65 = 45,035,680.86 : x
  2. Step 2: Convert to fraction form
    78,079,862.12/107,725,587.65 = 45,035,680.86/x
  3. Step 3: Cross multiply
    78,079,862.12x = 107,725,587.65 × 45,035,680.86
  4. Step 4: Simplify right side
    78,079,862.12x = 4,851,495,185,636,179
  5. Step 5: Solve for x
    x = 4,851,495,185,636,179/78,079,862.12
  6. Step 6: Final answer
    x = 62,135,037.82

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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.