Home / 91,892,209.40-137,838,314.10-57,879,985.40

Finding the Fourth Proportional to 91,892,209.40, 137,838,314.10 and 57,879,985.40

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Solution

The fourth proportional to 91,892,209.40, 137,838,314.10 and 57,879,985.40 is: 86,819,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,892,209.40 : 137,838,314.10 = 57,879,985.40 : x
  2. Step 2: Convert to fraction form
    91,892,209.40/137,838,314.10 = 57,879,985.40/x
  3. Step 3: Cross multiply
    91,892,209.40x = 137,838,314.10 × 57,879,985.40
  4. Step 4: Simplify right side
    91,892,209.40x = 7,978,079,607,668,614
  5. Step 5: Solve for x
    x = 7,978,079,607,668,614/91,892,209.40
  6. Step 6: Final answer
    x = 86,819,978.10

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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.