Home / 63,030-86,985.70-38,511.31

Finding the Fourth Proportional to 63,030, 86,985.70 and 38,511.31

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Solution

The fourth proportional to 63,030, 86,985.70 and 38,511.31 is: 53,148.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,030 : 86,985.70 = 38,511.31 : x
  2. Step 2: Convert to fraction form
    63,030/86,985.70 = 38,511.31/x
  3. Step 3: Cross multiply
    63,030x = 86,985.70 × 38,511.31
  4. Step 4: Simplify right side
    63,030x = 3,349,932,823.34
  5. Step 5: Solve for x
    x = 3,349,932,823.34/63,030
  6. Step 6: Final answer
    x = 53,148.23

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1.5x scale

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.