Home / 78,804,585.70-118,206,878.55-42,524,880.10

Finding the Fourth Proportional to 78,804,585.70, 118,206,878.55 and 42,524,880.10

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Solution

The fourth proportional to 78,804,585.70, 118,206,878.55 and 42,524,880.10 is: 63,787,320.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,804,585.70 : 118,206,878.55 = 42,524,880.10 : x
  2. Step 2: Convert to fraction form
    78,804,585.70/118,206,878.55 = 42,524,880.10/x
  3. Step 3: Cross multiply
    78,804,585.70x = 118,206,878.55 × 42,524,880.10
  4. Step 4: Simplify right side
    78,804,585.70x = 5,026,733,337,334,012
  5. Step 5: Solve for x
    x = 5,026,733,337,334,012/78,804,585.70
  6. Step 6: Final answer
    x = 63,787,320.15

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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.