Home / 85,968,314.20-128,952,471.30-55,357,312.60

Finding the Fourth Proportional to 85,968,314.20, 128,952,471.30 and 55,357,312.60

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Solution

The fourth proportional to 85,968,314.20, 128,952,471.30 and 55,357,312.60 is: 83,035,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,314.20 : 128,952,471.30 = 55,357,312.60 : x
  2. Step 2: Convert to fraction form
    85,968,314.20/128,952,471.30 = 55,357,312.60/x
  3. Step 3: Cross multiply
    85,968,314.20x = 128,952,471.30 × 55,357,312.60
  4. Step 4: Simplify right side
    85,968,314.20x = 7,138,462,264,296,628
  5. Step 5: Solve for x
    x = 7,138,462,264,296,628/85,968,314.20
  6. Step 6: Final answer
    x = 83,035,968.90

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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.