Home / 81,249,623.89-121,894,287.18-25,917,468.45

Finding the Fourth Proportional to 81,249,623.89, 121,894,287.18 and 25,917,468.45

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Solution

The fourth proportional to 81,249,623.89, 121,894,287.18 and 25,917,468.45 is: 38,882,534.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,249,623.89 : 121,894,287.18 = 25,917,468.45 : x
  2. Step 2: Convert to fraction form
    81,249,623.89/121,894,287.18 = 25,917,468.45/x
  3. Step 3: Cross multiply
    81,249,623.89x = 121,894,287.18 × 25,917,468.45
  4. Step 4: Simplify right side
    81,249,623.89x = 3,159,191,341,668,595
  5. Step 5: Solve for x
    x = 3,159,191,341,668,595/81,249,623.89
  6. Step 6: Final answer
    x = 38,882,534.96

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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.