Home / 78,986,407.71-118,484,810.24-20,695,513.04

Finding the Fourth Proportional to 78,986,407.71, 118,484,810.24 and 20,695,513.04

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Solution

The fourth proportional to 78,986,407.71, 118,484,810.24 and 20,695,513.04 is: 31,044,631.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,986,407.71 : 118,484,810.24 = 20,695,513.04 : x
  2. Step 2: Convert to fraction form
    78,986,407.71/118,484,810.24 = 20,695,513.04/x
  3. Step 3: Cross multiply
    78,986,407.71x = 118,484,810.24 × 20,695,513.04
  4. Step 4: Simplify right side
    78,986,407.71x = 2,452,103,934,667,944
  5. Step 5: Solve for x
    x = 2,452,103,934,667,944/78,986,407.71
  6. Step 6: Final answer
    x = 31,044,631.67

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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.