Home / 77,013,669.60-115,520,504.40-74,774,181.60

Finding the Fourth Proportional to 77,013,669.60, 115,520,504.40 and 74,774,181.60

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Solution

The fourth proportional to 77,013,669.60, 115,520,504.40 and 74,774,181.60 is: 112,161,272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,013,669.60 : 115,520,504.40 = 74,774,181.60 : x
  2. Step 2: Convert to fraction form
    77,013,669.60/115,520,504.40 = 74,774,181.60/x
  3. Step 3: Cross multiply
    77,013,669.60x = 115,520,504.40 × 74,774,181.60
  4. Step 4: Simplify right side
    77,013,669.60x = 8,637,951,174,529,199
  5. Step 5: Solve for x
    x = 8,637,951,174,529,199/77,013,669.60
  6. Step 6: Final answer
    x = 112,161,272.40

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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.