Home / 81,430.93-112,386.55-45,623.36

Finding the Fourth Proportional to 81,430.93, 112,386.55 and 45,623.36

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Solution

The fourth proportional to 81,430.93, 112,386.55 and 45,623.36 is: 62,966.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,430.93 : 112,386.55 = 45,623.36 : x
  2. Step 2: Convert to fraction form
    81,430.93/112,386.55 = 45,623.36/x
  3. Step 3: Cross multiply
    81,430.93x = 112,386.55 × 45,623.36
  4. Step 4: Simplify right side
    81,430.93x = 5,127,452,029.81
  5. Step 5: Solve for x
    x = 5,127,452,029.81/81,430.93
  6. Step 6: Final answer
    x = 62,966.89

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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.