Home / 78,172,005.20-117,258,007.80-58,772,440.40

Finding the Fourth Proportional to 78,172,005.20, 117,258,007.80 and 58,772,440.40

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Solution

The fourth proportional to 78,172,005.20, 117,258,007.80 and 58,772,440.40 is: 88,158,660.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,172,005.20 : 117,258,007.80 = 58,772,440.40 : x
  2. Step 2: Convert to fraction form
    78,172,005.20/117,258,007.80 = 58,772,440.40/x
  3. Step 3: Cross multiply
    78,172,005.20x = 117,258,007.80 × 58,772,440.40
  4. Step 4: Simplify right side
    78,172,005.20x = 6,891,539,274,848,235
  5. Step 5: Solve for x
    x = 6,891,539,274,848,235/78,172,005.20
  6. Step 6: Final answer
    x = 88,158,660.60

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1.5x scale

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.