Home / 91,317.48-125,783.76-64,412.70

Finding the Fourth Proportional to 91,317.48, 125,783.76 and 64,412.70

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Solution

The fourth proportional to 91,317.48, 125,783.76 and 64,412.70 is: 88,724.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,317.48 : 125,783.76 = 64,412.70 : x
  2. Step 2: Convert to fraction form
    91,317.48/125,783.76 = 64,412.70/x
  3. Step 3: Cross multiply
    91,317.48x = 125,783.76 × 64,412.70
  4. Step 4: Simplify right side
    91,317.48x = 8,102,071,597.75
  5. Step 5: Solve for x
    x = 8,102,071,597.75/91,317.48
  6. Step 6: Final answer
    x = 88,724.21

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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.