Home / 91,415.02-126,152.37-51,128.62

Finding the Fourth Proportional to 91,415.02, 126,152.37 and 51,128.62

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Solution

The fourth proportional to 91,415.02, 126,152.37 and 51,128.62 is: 70,557.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,415.02 : 126,152.37 = 51,128.62 : x
  2. Step 2: Convert to fraction form
    91,415.02/126,152.37 = 51,128.62/x
  3. Step 3: Cross multiply
    91,415.02x = 126,152.37 × 51,128.62
  4. Step 4: Simplify right side
    91,415.02x = 6,449,996,587.83
  5. Step 5: Solve for x
    x = 6,449,996,587.83/91,415.02
  6. Step 6: Final answer
    x = 70,557.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.