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Finding the Fourth Proportional to 61,852.51, 85,300.10 and 52,312.40

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Solution

The fourth proportional to 61,852.51, 85,300.10 and 52,312.40 is: 72,143.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,852.51 : 85,300.10 = 52,312.40 : x
  2. Step 2: Convert to fraction form
    61,852.51/85,300.10 = 52,312.40/x
  3. Step 3: Cross multiply
    61,852.51x = 85,300.10 × 52,312.40
  4. Step 4: Simplify right side
    61,852.51x = 4,462,252,524.74
  5. Step 5: Solve for x
    x = 4,462,252,524.74/61,852.51
  6. Step 6: Final answer
    x = 72,143.44

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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.