Home / 81,210.07-121,802.77-28,607.25

Finding the Fourth Proportional to 81,210.07, 121,802.77 and 28,607.25

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Solution

The fourth proportional to 81,210.07, 121,802.77 and 28,607.25 is: 42,906.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,210.07 : 121,802.77 = 28,607.25 : x
  2. Step 2: Convert to fraction form
    81,210.07/121,802.77 = 28,607.25/x
  3. Step 3: Cross multiply
    81,210.07x = 121,802.77 × 28,607.25
  4. Step 4: Simplify right side
    81,210.07x = 3,484,442,292.08
  5. Step 5: Solve for x
    x = 3,484,442,292.08/81,210.07
  6. Step 6: Final answer
    x = 42,906.53

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1.5x scale

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.