Home / 81,050.02-121,617.86-57,509.70

Finding the Fourth Proportional to 81,050.02, 121,617.86 and 57,509.70

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Solution

The fourth proportional to 81,050.02, 121,617.86 and 57,509.70 is: 86,294.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,050.02 : 121,617.86 = 57,509.70 : x
  2. Step 2: Convert to fraction form
    81,050.02/121,617.86 = 57,509.70/x
  3. Step 3: Cross multiply
    81,050.02x = 121,617.86 × 57,509.70
  4. Step 4: Simplify right side
    81,050.02x = 6,994,205,899.63
  5. Step 5: Solve for x
    x = 6,994,205,899.63/81,050.02
  6. Step 6: Final answer
    x = 86,294.93

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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.