Home / 85,253,287.80-127,879,931.70-31,393,601.40

Finding the Fourth Proportional to 85,253,287.80, 127,879,931.70 and 31,393,601.40

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Solution

The fourth proportional to 85,253,287.80, 127,879,931.70 and 31,393,601.40 is: 47,090,402.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,253,287.80 : 127,879,931.70 = 31,393,601.40 : x
  2. Step 2: Convert to fraction form
    85,253,287.80/127,879,931.70 = 31,393,601.40/x
  3. Step 3: Cross multiply
    85,253,287.80x = 127,879,931.70 × 31,393,601.40
  4. Step 4: Simplify right side
    85,253,287.80x = 4,014,611,602,849,024.50
  5. Step 5: Solve for x
    x = 4,014,611,602,849,024.50/85,253,287.80
  6. Step 6: Final answer
    x = 47,090,402.10

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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.