Home / 78,894,140.30-118,341,210.45-21,386,319.20

Finding the Fourth Proportional to 78,894,140.30, 118,341,210.45 and 21,386,319.20

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Solution

The fourth proportional to 78,894,140.30, 118,341,210.45 and 21,386,319.20 is: 32,079,478.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,894,140.30 : 118,341,210.45 = 21,386,319.20 : x
  2. Step 2: Convert to fraction form
    78,894,140.30/118,341,210.45 = 21,386,319.20/x
  3. Step 3: Cross multiply
    78,894,140.30x = 118,341,210.45 × 21,386,319.20
  4. Step 4: Simplify right side
    78,894,140.30x = 2,530,882,901,198,075.50
  5. Step 5: Solve for x
    x = 2,530,882,901,198,075.50/78,894,140.30
  6. Step 6: Final answer
    x = 32,079,478.80

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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.