Home / 78,736,628.90-118,045,894.35-40,425,637.70

Finding the Fourth Proportional to 78,736,628.90, 118,045,894.35 and 40,425,637.70

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Solution

The fourth proportional to 78,736,628.90, 118,045,894.35 and 40,425,637.70 is: 60,608,139.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,736,628.90 : 118,045,894.35 = 40,425,637.70 : x
  2. Step 2: Convert to fraction form
    78,736,628.90/118,045,894.35 = 40,425,637.70/x
  3. Step 3: Cross multiply
    78,736,628.90x = 118,045,894.35 × 40,425,637.70
  4. Step 4: Simplify right side
    78,736,628.90x = 4,772,080,556,965,577
  5. Step 5: Solve for x
    x = 4,772,080,556,965,577/78,736,628.90
  6. Step 6: Final answer
    x = 60,608,139.10

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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.