Home / 78,621,807.60-117,932,711.40-40,358,055.60

Finding the Fourth Proportional to 78,621,807.60, 117,932,711.40 and 40,358,055.60

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Solution

The fourth proportional to 78,621,807.60, 117,932,711.40 and 40,358,055.60 is: 60,537,083.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,621,807.60 : 117,932,711.40 = 40,358,055.60 : x
  2. Step 2: Convert to fraction form
    78,621,807.60/117,932,711.40 = 40,358,055.60/x
  3. Step 3: Cross multiply
    78,621,807.60x = 117,932,711.40 × 40,358,055.60
  4. Step 4: Simplify right side
    78,621,807.60x = 4,759,534,923,739,954
  5. Step 5: Solve for x
    x = 4,759,534,923,739,954/78,621,807.60
  6. Step 6: Final answer
    x = 60,537,083.40

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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.