Home / 78,621,805.60-117,932,708.40-40,358,053.60

Finding the Fourth Proportional to 78,621,805.60, 117,932,708.40 and 40,358,053.60

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Solution

The fourth proportional to 78,621,805.60, 117,932,708.40 and 40,358,053.60 is: 60,537,080.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,621,805.60 : 117,932,708.40 = 40,358,053.60 : x
  2. Step 2: Convert to fraction form
    78,621,805.60/117,932,708.40 = 40,358,053.60/x
  3. Step 3: Cross multiply
    78,621,805.60x = 117,932,708.40 × 40,358,053.60
  4. Step 4: Simplify right side
    78,621,805.60x = 4,759,534,566,800,371
  5. Step 5: Solve for x
    x = 4,759,534,566,800,371/78,621,805.60
  6. Step 6: Final answer
    x = 60,537,080.40

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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.