Home / 84,528,017.20-126,792,025.80-78,817,322.80

Finding the Fourth Proportional to 84,528,017.20, 126,792,025.80 and 78,817,322.80

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Solution

The fourth proportional to 84,528,017.20, 126,792,025.80 and 78,817,322.80 is: 118,225,984.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,528,017.20 : 126,792,025.80 = 78,817,322.80 : x
  2. Step 2: Convert to fraction form
    84,528,017.20/126,792,025.80 = 78,817,322.80/x
  3. Step 3: Cross multiply
    84,528,017.20x = 126,792,025.80 × 78,817,322.80
  4. Step 4: Simplify right side
    84,528,017.20x = 9,993,408,025,944,528
  5. Step 5: Solve for x
    x = 9,993,408,025,944,528/84,528,017.20
  6. Step 6: Final answer
    x = 118,225,984.20

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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.