Home / 98,831.72-136,387.86-53,509.74

Finding the Fourth Proportional to 98,831.72, 136,387.86 and 53,509.74

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Solution

The fourth proportional to 98,831.72, 136,387.86 and 53,509.74 is: 73,843.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,831.72 : 136,387.86 = 53,509.74 : x
  2. Step 2: Convert to fraction form
    98,831.72/136,387.86 = 53,509.74/x
  3. Step 3: Cross multiply
    98,831.72x = 136,387.86 × 53,509.74
  4. Step 4: Simplify right side
    98,831.72x = 7,298,078,927.76
  5. Step 5: Solve for x
    x = 7,298,078,927.76/98,831.72
  6. Step 6: Final answer
    x = 73,843.49

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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.