Home / 84,528,001.70-126,792,002.55-78,817,307.30

Finding the Fourth Proportional to 84,528,001.70, 126,792,002.55 and 78,817,307.30

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Solution

The fourth proportional to 84,528,001.70, 126,792,002.55 and 78,817,307.30 is: 118,225,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,528,001.70 : 126,792,002.55 = 78,817,307.30 : x
  2. Step 2: Convert to fraction form
    84,528,001.70/126,792,002.55 = 78,817,307.30/x
  3. Step 3: Cross multiply
    84,528,001.70x = 126,792,002.55 × 78,817,307.30
  4. Step 4: Simplify right side
    84,528,001.70x = 9,993,404,228,165,734
  5. Step 5: Solve for x
    x = 9,993,404,228,165,734/84,528,001.70
  6. Step 6: Final answer
    x = 118,225,960.95

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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.