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Finding the Fourth Proportional to 53,038.96, 79,551.96 and 21,870.16

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Solution

The fourth proportional to 53,038.96, 79,551.96 and 21,870.16 is: 32,802.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,038.96 : 79,551.96 = 21,870.16 : x
  2. Step 2: Convert to fraction form
    53,038.96/79,551.96 = 21,870.16/x
  3. Step 3: Cross multiply
    53,038.96x = 79,551.96 × 21,870.16
  4. Step 4: Simplify right side
    53,038.96x = 1,739,814,093.51
  5. Step 5: Solve for x
    x = 1,739,814,093.51/53,038.96
  6. Step 6: Final answer
    x = 32,802.57

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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.