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Finding the Fourth Proportional to 65,807,379.78, 90,908,779.77 and 52,559,162.82

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Solution

The fourth proportional to 65,807,379.78, 90,908,779.77 and 52,559,162.82 is: 72,607,196.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,807,379.78 : 90,908,779.77 = 52,559,162.82 : x
  2. Step 2: Convert to fraction form
    65,807,379.78/90,908,779.77 = 52,559,162.82/x
  3. Step 3: Cross multiply
    65,807,379.78x = 90,908,779.77 × 52,559,162.82
  4. Step 4: Simplify right side
    65,807,379.78x = 4,778,089,357,698,952
  5. Step 5: Solve for x
    x = 4,778,089,357,698,952/65,807,379.78
  6. Step 6: Final answer
    x = 72,607,196.54

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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.