Home / 81,210.51-121,688.10-62,467.92

Finding the Fourth Proportional to 81,210.51, 121,688.10 and 62,467.92

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Solution

The fourth proportional to 81,210.51, 121,688.10 and 62,467.92 is: 93,603.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,210.51 : 121,688.10 = 62,467.92 : x
  2. Step 2: Convert to fraction form
    81,210.51/121,688.10 = 62,467.92/x
  3. Step 3: Cross multiply
    81,210.51x = 121,688.10 × 62,467.92
  4. Step 4: Simplify right side
    81,210.51x = 7,601,602,495.75
  5. Step 5: Solve for x
    x = 7,601,602,495.75/81,210.51
  6. Step 6: Final answer
    x = 93,603.68

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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.