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Finding the Fourth Proportional to 55,030.79, 82,558.79 and 19,970.45

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Solution

The fourth proportional to 55,030.79, 82,558.79 and 19,970.45 is: 29,960.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,030.79 : 82,558.79 = 19,970.45 : x
  2. Step 2: Convert to fraction form
    55,030.79/82,558.79 = 19,970.45/x
  3. Step 3: Cross multiply
    55,030.79x = 82,558.79 × 19,970.45
  4. Step 4: Simplify right side
    55,030.79x = 1,648,735,675.11
  5. Step 5: Solve for x
    x = 1,648,735,675.11/55,030.79
  6. Step 6: Final answer
    x = 29,960.24

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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.