Home / 78,732,309.80-118,003,986.30-40,374,079.40

Finding the Fourth Proportional to 78,732,309.80, 118,003,986.30 and 40,374,079.40

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Solution

The fourth proportional to 78,732,309.80, 118,003,986.30 and 40,374,079.40 is: 60,512,670.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,309.80 : 118,003,986.30 = 40,374,079.40 : x
  2. Step 2: Convert to fraction form
    78,732,309.80/118,003,986.30 = 40,374,079.40/x
  3. Step 3: Cross multiply
    78,732,309.80x = 118,003,986.30 × 40,374,079.40
  4. Step 4: Simplify right side
    78,732,309.80x = 4,764,302,312,392,712
  5. Step 5: Solve for x
    x = 4,764,302,312,392,712/78,732,309.80
  6. Step 6: Final answer
    x = 60,512,670.40

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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.