Home / 105,421.23-145,466.96-62,970.75

Finding the Fourth Proportional to 105,421.23, 145,466.96 and 62,970.75

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Solution

The fourth proportional to 105,421.23, 145,466.96 and 62,970.75 is: 86,891.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,421.23 : 145,466.96 = 62,970.75 : x
  2. Step 2: Convert to fraction form
    105,421.23/145,466.96 = 62,970.75/x
  3. Step 3: Cross multiply
    105,421.23x = 145,466.96 × 62,970.75
  4. Step 4: Simplify right side
    105,421.23x = 9,160,163,256.57
  5. Step 5: Solve for x
    x = 9,160,163,256.57/105,421.23
  6. Step 6: Final answer
    x = 86,891.07

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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.