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Finding the Fourth Proportional to 70,369,060.80, 105,632,234.40 and 65,748,772.80

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Solution

The fourth proportional to 70,369,060.80, 105,632,234.40 and 65,748,772.80 is: 98,696,638.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,369,060.80 : 105,632,234.40 = 65,748,772.80 : x
  2. Step 2: Convert to fraction form
    70,369,060.80/105,632,234.40 = 65,748,772.80/x
  3. Step 3: Cross multiply
    70,369,060.80x = 105,632,234.40 × 65,748,772.80
  4. Step 4: Simplify right side
    70,369,060.80x = 6,945,189,779,921,944
  5. Step 5: Solve for x
    x = 6,945,189,779,921,944/70,369,060.80
  6. Step 6: Final answer
    x = 98,696,638.85

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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.