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Finding the Fourth Proportional to 64,509.73, 89,020.40 and 35,831.25

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Solution

The fourth proportional to 64,509.73, 89,020.40 and 35,831.25 is: 49,445.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,509.73 : 89,020.40 = 35,831.25 : x
  2. Step 2: Convert to fraction form
    64,509.73/89,020.40 = 35,831.25/x
  3. Step 3: Cross multiply
    64,509.73x = 89,020.40 × 35,831.25
  4. Step 4: Simplify right side
    64,509.73x = 3,189,712,519.63
  5. Step 5: Solve for x
    x = 3,189,712,519.63/64,509.73
  6. Step 6: Final answer
    x = 49,445.45

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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.