Home / 78,736,031.70-118,104,047.55-71,555,673.30

Finding the Fourth Proportional to 78,736,031.70, 118,104,047.55 and 71,555,673.30

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Solution

The fourth proportional to 78,736,031.70, 118,104,047.55 and 71,555,673.30 is: 107,333,509.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,736,031.70 : 118,104,047.55 = 71,555,673.30 : x
  2. Step 2: Convert to fraction form
    78,736,031.70/118,104,047.55 = 71,555,673.30/x
  3. Step 3: Cross multiply
    78,736,031.70x = 118,104,047.55 × 71,555,673.30
  4. Step 4: Simplify right side
    78,736,031.70x = 8,451,014,641,895,465
  5. Step 5: Solve for x
    x = 8,451,014,641,895,465/78,736,031.70
  6. Step 6: Final answer
    x = 107,333,509.95

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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.