Home / 86,249,772.90-129,310,847.55-40,758,423.30

Finding the Fourth Proportional to 86,249,772.90, 129,310,847.55 and 40,758,423.30

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Solution

The fourth proportional to 86,249,772.90, 129,310,847.55 and 40,758,423.30 is: 61,107,479.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,249,772.90 : 129,310,847.55 = 40,758,423.30 : x
  2. Step 2: Convert to fraction form
    86,249,772.90/129,310,847.55 = 40,758,423.30/x
  3. Step 3: Cross multiply
    86,249,772.90x = 129,310,847.55 × 40,758,423.30
  4. Step 4: Simplify right side
    86,249,772.90x = 5,270,506,261,724,667
  5. Step 5: Solve for x
    x = 5,270,506,261,724,667/86,249,772.90
  6. Step 6: Final answer
    x = 61,107,479.88

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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.