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Finding the Fourth Proportional to 56,804.81, 78,390.79 and 34,156.77

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Solution

The fourth proportional to 56,804.81, 78,390.79 and 34,156.77 is: 47,136.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,804.81 : 78,390.79 = 34,156.77 : x
  2. Step 2: Convert to fraction form
    56,804.81/78,390.79 = 34,156.77/x
  3. Step 3: Cross multiply
    56,804.81x = 78,390.79 × 34,156.77
  4. Step 4: Simplify right side
    56,804.81x = 2,677,575,621.41
  5. Step 5: Solve for x
    x = 2,677,575,621.41/56,804.81
  6. Step 6: Final answer
    x = 47,136.43

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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.