Home / 85,775,055.40-128,662,583.10-51,678,850.60

Finding the Fourth Proportional to 85,775,055.40, 128,662,583.10 and 51,678,850.60

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Solution

The fourth proportional to 85,775,055.40, 128,662,583.10 and 51,678,850.60 is: 77,518,275.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,775,055.40 : 128,662,583.10 = 51,678,850.60 : x
  2. Step 2: Convert to fraction form
    85,775,055.40/128,662,583.10 = 51,678,850.60/x
  3. Step 3: Cross multiply
    85,775,055.40x = 128,662,583.10 × 51,678,850.60
  4. Step 4: Simplify right side
    85,775,055.40x = 6,649,134,409,834,985
  5. Step 5: Solve for x
    x = 6,649,134,409,834,985/85,775,055.40
  6. Step 6: Final answer
    x = 77,518,275.90

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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.