Home / 81,853,313.40-122,779,970.10-70,852,484.70

Finding the Fourth Proportional to 81,853,313.40, 122,779,970.10 and 70,852,484.70

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Solution

The fourth proportional to 81,853,313.40, 122,779,970.10 and 70,852,484.70 is: 106,278,727.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,853,313.40 : 122,779,970.10 = 70,852,484.70 : x
  2. Step 2: Convert to fraction form
    81,853,313.40/122,779,970.10 = 70,852,484.70/x
  3. Step 3: Cross multiply
    81,853,313.40x = 122,779,970.10 × 70,852,484.70
  4. Step 4: Simplify right side
    81,853,313.40x = 8,699,265,952,976,707
  5. Step 5: Solve for x
    x = 8,699,265,952,976,707/81,853,313.40
  6. Step 6: Final answer
    x = 106,278,727.05

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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.