Home / 78,859,516.40-118,112,327.40-64,703,740.40

Finding the Fourth Proportional to 78,859,516.40, 118,112,327.40 and 64,703,740.40

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Solution

The fourth proportional to 78,859,516.40, 118,112,327.40 and 64,703,740.40 is: 96,910,426.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,859,516.40 : 118,112,327.40 = 64,703,740.40 : x
  2. Step 2: Convert to fraction form
    78,859,516.40/118,112,327.40 = 64,703,740.40/x
  3. Step 3: Cross multiply
    78,859,516.40x = 118,112,327.40 × 64,703,740.40
  4. Step 4: Simplify right side
    78,859,516.40x = 7,642,309,370,129,407
  5. Step 5: Solve for x
    x = 7,642,309,370,129,407/78,859,516.40
  6. Step 6: Final answer
    x = 96,910,426.53

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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.