Home / 72,768,030.40-109,152,045.60-71,333,139.70

Finding the Fourth Proportional to 72,768,030.40, 109,152,045.60 and 71,333,139.70

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Solution

The fourth proportional to 72,768,030.40, 109,152,045.60 and 71,333,139.70 is: 106,999,709.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,768,030.40 : 109,152,045.60 = 71,333,139.70 : x
  2. Step 2: Convert to fraction form
    72,768,030.40/109,152,045.60 = 71,333,139.70/x
  3. Step 3: Cross multiply
    72,768,030.40x = 109,152,045.60 × 71,333,139.70
  4. Step 4: Simplify right side
    72,768,030.40x = 7,786,158,117,325,570
  5. Step 5: Solve for x
    x = 7,786,158,117,325,570/72,768,030.40
  6. Step 6: Final answer
    x = 106,999,709.55

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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.