Home / 72,842,495.40-109,263,743.10-18,989,807.40

Finding the Fourth Proportional to 72,842,495.40, 109,263,743.10 and 18,989,807.40

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Solution

The fourth proportional to 72,842,495.40, 109,263,743.10 and 18,989,807.40 is: 28,484,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,842,495.40 : 109,263,743.10 = 18,989,807.40 : x
  2. Step 2: Convert to fraction form
    72,842,495.40/109,263,743.10 = 18,989,807.40/x
  3. Step 3: Cross multiply
    72,842,495.40x = 109,263,743.10 × 18,989,807.40
  4. Step 4: Simplify right side
    72,842,495.40x = 2,074,897,437,272,078.75
  5. Step 5: Solve for x
    x = 2,074,897,437,272,078.75/72,842,495.40
  6. Step 6: Final answer
    x = 28,484,711.10

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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.