Home / 78,414,643.60-117,621,965.40-40,063,411.60

Finding the Fourth Proportional to 78,414,643.60, 117,621,965.40 and 40,063,411.60

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Solution

The fourth proportional to 78,414,643.60, 117,621,965.40 and 40,063,411.60 is: 60,095,117.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,414,643.60 : 117,621,965.40 = 40,063,411.60 : x
  2. Step 2: Convert to fraction form
    78,414,643.60/117,621,965.40 = 40,063,411.60/x
  3. Step 3: Cross multiply
    78,414,643.60x = 117,621,965.40 × 40,063,411.60
  4. Step 4: Simplify right side
    78,414,643.60x = 4,712,337,213,021,159
  5. Step 5: Solve for x
    x = 4,712,337,213,021,159/78,414,643.60
  6. Step 6: Final answer
    x = 60,095,117.40

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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.