Home / 72,307,901.40-99,815,441.03-48,818,259.76

Finding the Fourth Proportional to 72,307,901.40, 99,815,441.03 and 48,818,259.76

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Solution

The fourth proportional to 72,307,901.40, 99,815,441.03 and 48,818,259.76 is: 67,389,815.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,307,901.40 : 99,815,441.03 = 48,818,259.76 : x
  2. Step 2: Convert to fraction form
    72,307,901.40/99,815,441.03 = 48,818,259.76/x
  3. Step 3: Cross multiply
    72,307,901.40x = 99,815,441.03 × 48,818,259.76
  4. Step 4: Simplify right side
    72,307,901.40x = 4,872,816,128,261,502
  5. Step 5: Solve for x
    x = 4,872,816,128,261,502/72,307,901.40
  6. Step 6: Final answer
    x = 67,389,815.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.